Zirconium has a series of excellent properties, such as good heat resistance, plasticity, corrosion resistance, special nuclear properties, and so on. Therefore, it has become an important structural raw material for atomic energy, electronics, chemical industry, metallurgy and national defense industries. For example, the thermal neutron absorption interface of zirconium is small and can be used as the mechanism material of reactor core. Zirconium has good corrosion resistance to strong alkali, molten caustic substances, liquid metals, and acids, even better than titanium in some media. The gettering properties of zirconium have been widely used in the field of electrical vacuum as getter materials. The price of zirconium is high, but it has been widely used in chemical and pesticide equipment. In order to reduce costs more, it is a good way to use explosion bonded zirconium clad steel plate.
Henan Chalco produced a lot of zirconium-steel clad plates by secondary explosive welding, which were widely used in pesticides and chemical equipment.
Explosion bonded zirconium clad steel plate: the explosive clad technology is used to make zirconium plate and steel plate composite. The zirconium steel clad plate pressure vessel combines the advantages of zirconium and steel. It not only meets the special corrosion resistance requirements, but also greatly reduces the manufacturing cost. On the basis of introducing the properties of Zirconium-clad sheets such as R60700 and R60702, this paper emphatically expounds the welding joint form, welding process, welding test plate requirements of clad sheet pressure vessel and heat treatment process requirements of vessel equipment, as well as the popularization and application of Zirconium-clad sheet and the localization of Zirconium-clad sheet pressure vessel manufacturing provides technical reference.
| Base plate alloy | SA516 |
| Cladding plate alloy | R60700,R60702 |
| Standard | ASME B898 |
| Cladding plate thickness | ≤100㎜ |
| Base plate thickness | ≤500㎜ |
| Length | ≤12000㎜ |
| Width | ≤4200㎜ |
Application area:
The explosion bonded zirconium clad steel plate produced by Henan Chalco is used in petroleum, chemical, power plant, boiler and other industries to make reactor, spherical tank, nuclear reactor pressure shell, boiler drum, pressure water pipe of hydropower station, turbine spiral case and other equipment components.
